willingtocope Posted December 3, 2013 Report Share Posted December 3, 2013 Here's an interesting wikipedia entry on card numbering: http://en.wikipedia.org/wiki/List_of_Bank_Identification_Numbers Note that the article is not entirely complete. The whole numbering scheme is a moving target...but, the point is...FICO does know what kind of account the number relates to. 1 Link to comment Share on other sites More sharing options...
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